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1. 发明专利

CZ8622U1 Condenser cooling and freezing units 未知
公开(公告)号：CZ8622U1
公开(公告)日：1999-05-10
申请号：CZ910499
申请日：1999-03-10
申请人： SCHMITT VLADIMIR
发明人： SCHMITT VLADIMIR
IPC分类号： F25B1/00 , F25B001/00

2. 发明专利

AU2003246248B2 Refrigeration equipment 未知
公开(公告)号：AU2003246248B2
公开(公告)日：2005-08-11
申请号：AU2003246248
申请日：2003-07-02
申请人： DAIKIN IND LTD
发明人： TAKEGAMI MASAAKI , UENO TAKEO , TANIMOTO KENJI
IPC分类号： F24F11/02 , F25B1/10 , F25B13/00 , F25B29/00 , F25B49/02 , F25B029/00 , F25B013/00 , F25B001/00
摘要： In a refrigerating apparatus comprising a plurality of application-side heat exchangers (41), (45, 51) for air-conditioning and for cold-storage/freezing, it is configured so as to be capable of corresponding to various types of operation patterns when a compression mechanism (2) is configured by two compressors (2A, 2B). In order to continue operation even if one compressor is broken, a switching mechanism such as a four-way selector valve (3C) is provided on the suction side of the two compressors (2A, 2B), so that a plurality of operation patterns can be performed in a predetermined operation mode.

3. 发明专利

AU2003242410B2 Compression mechanism of refrigerator 未知
公开(公告)号：AU2003242410B2
公开(公告)日：2005-04-14
申请号：AU2003242410
申请日：2003-05-22
申请人： DAIKIN IND LTD
发明人： MATSUOKA HIROMUNE
IPC分类号： F25B1/00 , F04B39/02 , F25B13/00 , F25B31/00 , F25B001/00
摘要： The present invention provides an oil equalizing circuit for a refrigeration system provided with a plurality of compression mechanisms, the oil equalizing circuit being capable of supplying sufficient oil to the compressors that are running during partial load operation. The refrigeration system compression mechanism (11) is provided with the following: first, second, and third compressors (21, 22, 23); a refrigerant intake main pipe (24); first, second, and third intake branch pipes (25, 26, 27) connected to the intake sides of the compressors (21, 22, 23); first, second, and third oil separators (28, 29, 30) connected to the discharge sides of the compressors (21, 22, 23); and first, second, and third oil return pipes (31, 32, 33) provided on the oil separators (28, 29, 30). The first oil return pipe (31) is configured such that oil is delivered to the refrigerant intake main pipe (24) due to gravity when only the first compressor (21) is running. The second oil return pipe (32) is configured such that oil is delivered to the refrigerant intake main pipe (24) due to gravity when only the first and second compressors (21, 22) are running.

4. 发明专利

AU2003211883B2 Refrigerating Device 未知
公开(公告)号：AU2003211883B2
公开(公告)日：2005-09-01
申请号：AU2003211883
申请日：2003-01-23
申请人： DAIKIN IND LTD
发明人： SAKAE SATORU , TANIMOTO KENJI , TAKEGAMI MASAAKI
IPC分类号： F25B1/10 , F25B13/00 , F25B005/02 , F25B001/00
摘要： A refrigerating apparatus including three compressors (2A, 2B, 2C) and application side heat exchangers (41) (45, 51) for two channels is formed so that a first compressor (2A) is used only for the application side heat exchangers (45, 51) in a first channel of a circuit, a third compressor (2C) is used only for the application side heat exchanger (41) in a second channel of the circuit, and a second compressor (2B) is used in a switchable manner between the application side heat exchangers (45, 51) in the first channel of the circuit and the application side heat exchanger (41) in the second channel of the circuit. Thus, not only the pipe arrangement at suction side is simplified, but also operation control is streamlined.

5. 发明专利

AU2003235228B2 Oil equalizing circuit for compression mechanisms, heat source unit for freezing device, and freezing device having the same 未知
公开(公告)号：AU2003235228B2
公开(公告)日：2005-08-04
申请号：AU2003235228
申请日：2003-05-12
申请人： DAIKIN IND LTD
发明人： MATSUOKA HIROMUNE , MATSUOKA SHINYA , HORI YASUSHI
IPC分类号： F25B1/00 , F25B13/00 , F25B31/00 , F25B39/04 , F25B43/02 , F25B001/00
摘要： The present invention provides an oil equalizing circuit that can improve the reliability of the oil supply to the compression mechanisms in a refrigeration system provided with a plurality of compression mechanisms. The compressor group (11) of the air conditioning system (1) is equipped chiefly with first, second, and third compressors (21a to 21c) and an oil equalizing circuit (42). The oil equalizing circuit (42) is equipped with the following: first, second, and third oil separators (24a to 24c) provided on the discharge side of the compressors (21a to 21c); first, second, and third oil return pipes (25a to 25c) connecting the oil separators (24a to 24c) to the intake sides of the compressors (21a to 21c); a communication pipe (26) for allowing the oil return pipes (25a to 25c) to communicate with one another; first, second, and third oil ON-OFF switching means (27a to 27c) provided downstream of the parts where the oil return pipes (25a to 25c) connect to the communication pipe (26); and first, second, and third pressure reducing means (28a to 28c) provided upstream of the parts where the oil return pipes (25a to 25c) connect to the communication pipe (26).

6. 发明专利

AU2002301307B2 Ejector cycle system 未知
公开(公告)号：AU2002301307B2
公开(公告)日：2005-01-27
申请号：AU2002301307
申请日：2002-10-03
申请人： DENSO CORP
发明人： TAKEUCHI HIROTSUGU
IPC分类号： F25B1/00 , B60H1/32 , F25B9/00 , F25B9/08 , F25B40/00 , F25B41/00 , F25B001/00
摘要： In an ejector cycle system, a variable throttle (450) is disposed at an upstream side of an ejector (400). When high-pressure side refrigerant pressure in the ejector cycle system is approximately equal to or higher than critical pressure of the refrigerant, the variable throttle is fully opened. When the high-pressure side refrigerant pressure is approximately lower than the critical pressure of the refrigerant, a throttle open degree of the variable throttle is reduced from the fully open degree so that high-pressure side refrigerant is decompressed in two steps of the variable throttle and the ejector. Accordingly, in both cases of a high heat load and a low heat load of the ejector cycle system, COP of the ejector cycle system can be improved.

7. 发明专利

AU2002309020B2 Refrigerator 未知
公开(公告)号：AU2002309020B2
公开(公告)日：2004-07-15
申请号：AU2002309020
申请日：2002-05-20
申请人： DAIKIN IND LTD
发明人： MATSUOKA HIROMUNE , SHIMODA JUNICHI
IPC分类号： F25B1/00 , F25B45/00 , F25B49/02 , F25B045/00 , F25B001/00
摘要： The invention relates to an refrigeration apparatus equipped with a refi-igerant circuit (A) in which the following are connected together: a compressor (1) that compresses gaseous refrigerant, a heat-source-side heat exchanger (2), a receiver (3) for collecting liquid refrigerant, an expansion valve (4), a liquid pipe (8) that connects the receiver (3) and the expansion valve (4), a utilization-side heat exchanger (5), and a gas pipe (9) that connects the utilization-side heat exchanger (5) and the compressor (1); and a liquid level detecting means (10) that detects if the surface (L) of the liquid inside the receiver (3) has reached a prescribed level (L0, Lmax), wherein the following are further provided: a refrigerant charging operation control means that executes charging of the refrigerant circuit (A) with refrigerant while creating a refrigerant charging operation state in which the liquid pipe (8) of the refrigerant circuit (A) is filled with liquid refrigerant having a prescribed density; and a refrigerant charging ending means that ends refrigerant charging by the refrigerant charging operation control means based on the detection signal from the liquid level detecting means (10).

8. 发明专利

AU2003284698B2 Air conditioner 未知
公开(公告)号：AU2003284698B2
公开(公告)日：2005-11-24
申请号：AU2003284698
申请日：2003-11-17
申请人： DAIKIN IND LTD
发明人： MATSUOKA SHINYA , YASUSHI HORI , SADA SHINRI
IPC分类号： F25B1/00 , F25B13/00 , F25B31/00 , F25B001/00 , F25B013/00
摘要： The present invention is capable of eliminating the line unit in an air conditioner that includes a plurality of heat source units, and hold increases in onsite line construction to a minimum while making it possible to adjust the amount of refrigerant in the air conditioner. The air conditioner (1) includes a plurality of heat source units (102a - 102c), a refrigerant liquid junction line (4) and a refrigerant gas junction line (5), user units (3a, 3b), and a refrigerant supply circuit. The refrigerant supply circuit is used in situations in which some of the plurality of heat source units (1 02a - 120c) stop operating in response to the operational burden of the user units (3a, 3b), and is formed from refrigerant removal lines (21a - 21c) that remove refrigerant that accumulates inside stopped heat source units to the exterior thereof, and an oil equalization line (6) and oil removal lines (20a - 20c) that connect the refrigerant removal lines (21a - 21c) of each stopped heat source unit and the intake sides of the compression mechanisms (13a - 13c) of the operating heat source units,

9. 发明专利

AU2001252560B2 Method for refrigerant and oil collecting operation and refrigerant and oil collection controller 未知
公开(公告)号：AU2001252560B2
公开(公告)日：2005-11-10
申请号：AU2001252560
申请日：2001-04-25
申请人： DAIKIN IND LTD
发明人： TANAKA JUNICHIROU , TAIRA SHIGEHARU
IPC分类号： F25B13/00 , F25B43/02 , F25B45/00 , F25B045/00 , F25B001/00
摘要： A method for refrigerant and oil collecting operation capable of assuring the cleanliness of the inside of an existing communication pipe at a low cost and installing, at a low cost, a new air conditioner, comprising a compressor (1), a heat source side heat exchanger (3), a decompressing mechanism (4), and a user side heat exchanger (5), comprising the steps of performing a pipe heating operation in a heating operation mode and performing a refrigerant and oil collecting operation to collect refrigerant to a heat source side heat exchanger (3), namely, with the refrigerant heated to a temperature higher than that where contaminants such as refrigerator oil inside a refrigerant circuit is dissolved into the refrigerant, performing the refrigerant and oil collecting operation so as to assure the cleanliness of the inside of the existing communication pipes (7, 8).

10. 发明专利

AU2003221148B2 Refrigerator 未知
公开(公告)号：AU2003221148B2
公开(公告)日：2004-12-23
申请号：AU2003221148
申请日：2003-03-25
申请人： DAIKIN IND LTD
发明人： TAKEGAMI MASAAKI , TANIMOTO KENJI
IPC分类号： F25B13/00 , F25B31/00 , F25B41/04 , F25B001/00
摘要： Disclosed is a refrigerating apparatus using a temperature sensitive expansion valve ( 46 ) as an expansion mechanism. In the refrigerating apparatus, a switching valve ( 7 a) is disposed on the upstream side of an evaporator ( 45 ). The switching valve ( 7 a) is closed for a while, thereby forcibly placing an outlet side of the evaporator ( 45 ) in the superheat state to increase the valve travel of the expansion valve ( 46 ). Thereafter, the switching valve ( 7 a) is opened for liquid refrigerant to flow through the evaporator ( 45 ) so that a wettish operation is carried out. As a result of such arrangement, refrigerating machine oil that has accumulated in the evaporator ( 45 ) is reclaimed and returned to a compression mechanism ( 2 D).

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